Home / 21,187.13-29,238.21-11,627.07

Finding the Fourth Proportional to 21,187.13, 29,238.21 and 11,627.07

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Solution

The fourth proportional to 21,187.13, 29,238.21 and 11,627.07 is: 16,045.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.13 : 29,238.21 = 11,627.07 : x
  2. Step 2: Convert to fraction form
    21,187.13/29,238.21 = 11,627.07/x
  3. Step 3: Cross multiply
    21,187.13x = 29,238.21 × 11,627.07
  4. Step 4: Simplify right side
    21,187.13x = 339,954,604.70
  5. Step 5: Solve for x
    x = 339,954,604.70/21,187.13
  6. Step 6: Final answer
    x = 16,045.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.